Currently, the maximum transfer speed of "IEEE 802.11ac", which is becoming popular as a high-speed Wi-Fi access point, is 6.9 Gbps theoretically with 8 streams, but it is not sold in Japan. Currently, the Wi-Fi access point has a maximum transfer speed of 2167 Mbps with up to 4 streams, and a maximum transfer speed of 867 Mbps on the client side with up to 2 streams.
On the other hand, the theoretical maximum transfer speed reaches 9.6 Gbps, and "IEEE 802.11ax", which aims to improve speed even in congested environments, is currently being formulated. A home gateway that supports this draft standard and has a Wi-Fi access point function of up to 2.4 Gbps is for users of "au Hikari His Home 10 Giga / 5 Giga", which KDDI started offering in March. , has already been provided.
Netgear Japan already sells equipment compatible with "IEEE 802.11ad", which achieves a maximum transfer rate of 6.8 Gbps using the 60 GHz band, compared to 11ax, which uses the 2.4 GHz and 5 GHz bands. .
Intel, Qualcomm, and Toshiba have announced shipments for 2018 for 11ax compatible chips for Wi-Fi slave devices such as smartphones and PCs.
Therefore, this time, we will explain the trend of products compatible with "IEEE 802.11ax" on the access point side such as Wi-Fi routers and the client side such as notebook PCs and smartphones. (Editorial department)
The main technical differences between IEEE 802.11ac and IEEE 802.11ax have been introduced before. Of course, compatibility with the existing IEEE 802.11ac and the previous IEEE 802.11a/b/g/n will be maintained, so if anything, the IEEE 802.11ac compatible chipset will newly support IEEE 802.11ax It may be closer to the actual situation that it will be in the form of adding
Basically, there is no big jump in technology, but for example, the subcarrier width is 78.125KHz, so the performance of the frequency filter has to match this, and the OFDMA I explained last time The difference is that it is necessary to add support for 1024QAM and support for 1024QAM, so it is difficult to say that these implementations are "easy".
However, as shown below, chipset companies are positive about introducing products that support 11ax.
